Compile with gcc

examples/deflate.c

@@ -44,7 +44,7 @@ static void deflate(nghttp2_hd_deflater *deflater,
 static int inflate_header_block(nghttp2_hd_inflater *inflater, uint8_t *in,
                                 size_t inlen, int final);
 
-int main() {
+int main(void) {
   int rv;
   nghttp2_hd_deflater *deflater;
   nghttp2_hd_inflater *inflater;

tests/failmalloc.c

@@ -37,7 +37,7 @@ static int init_suite1(void) { return 0; }
 
 static int clean_suite1(void) { return 0; }
 
-int main() {
+int main(void) {
   CU_pSuite pSuite = NULL;
   unsigned int num_tests_failed;
 

tests/main.c

@@ -47,7 +47,7 @@ static int init_suite1(void) { return 0; }
 
 static int clean_suite1(void) { return 0; }
 
-int main() {
+int main(void) {
   CU_pSuite pSuite = NULL;
   unsigned int num_tests_failed;